Rotary steam engine



Nov. 1, 1927.

' 1,647,464 W. G. PRMELE ROTARY STEAM ENGINE Filed gv. 7,1925. asneets-shee 1 y i5 l l al: r

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WILLIAM@ Peer/Inria, or erlernen, wesrryrnrron.Vv y I ROTARY eraan' nno'ntn.

' Y.Lippiieafifm sied Novel-liter 7., 1225; serial No. 67,622.' i

This invention relatesto steam enginesand more particularly `steam engines of the' .roe tary type, the primary object of the invention being` to providefa novelV form of steam engine wherein a fluid-tight connection will and blade of the4 piston at all times.

ifrn important lobjectief the :invention is to provide mea-.ns whereby the slidingabutment will be automatically moved 'to Ythe limit of its upward movement by the ace tion of the blade of the piston.y

Another important object of the invention is to provide a novel formI of piston to insure against leakage of steam between the side faces o-f'the piston and enginewall.

" With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the'comf bmation and arrangement of parts and 1n the details of construction hereiriafterde- '2 2 of Figure 1.

Figure 3 is a fragmental end elevational View of the engine.

Figure 4 is a fragmental sectional view through the upper portion o-f the engine.

Figure 5 is a perspective view of the expansive washer.

Figure 6 is a perspective View of the expansivev washer clamping member.

, Referring to the drawings in detail, the reference character 5 indicates the cylinder of the engine, which is formed preferably in' two parts which are bolted together by means of bolts 6,the lower section ofthe cylinder being provided with a base 7 as shown by Figure 1. .i v

TheY Yreference character 8 indicates the steam chest which is bolted to the upper section of the cylinder, .at 9, the steam chest 8 being provided with a main opening 10 and lateral passageways l1 and 12 respectively, Vcommunicating with the opening 10, the passageways communicating with the interior of the cylinder through the passageways 13.

Valve `members 111, which'are of the `rotary type control; the passage of steam throughtlie'passagcways 11 and 12 'and 13, in'a mannerv to be hereinafter more fully ldescribed. The controlling valvev for. con-` trollingthe passage of steam from the main Y steam supply is shown at v and controls the passage of steam tothe main open-ing 10.

Adjacent to the steaml chest a'referrhaust valves 16 and 17 respectively which arefcfonnec'ted with the valves 14 through the gears 18, 19 and-2 0,4 thereV being",v provided alV lever 21 connected vwith one of theV gears 18 so that "as the lever 21 is rotated, the valve membersV will be moved simultaneously toV reverse the operation ofthe engine.l y

`Operating within the cylinder is the piston 22 mounted on the shaft 23 that oper` ates in suitable bearings carried by the cylinder.. Forming a` part ofthe piston is a blade-24 that extends to a positionrengag- A ing the inner surfaceof the cylinder as.

shown byFigure 1. .EXpansive wash-ers 25 are positioned on opposite sides of the blade 24 land haver their upper and lower edges formed at right angles, the upper edges thereof sweeping the inner .surface of the cylinder. y

Securing members shown more clearly by Figure 6 o f the drawings, include elongated metallic members 26 which are formed with openings 27 through which -the securing screws 28`pass to secure the washers to the blades 24;,` anges 29 being provided on the members 26'to kengage the right angled` exss j tremities of the washers to hold them inposition.

Each of these members 26 includes a cen-l k tral flange portion 30 thatyhas its upper and lower edges cut away as at 31v to receive portions of the washers. These central flange portions have inclined edges 32 that move under the sliding abutment 33 to move the sliding abutment into and out of engagement with the rotor. v At the lower end of thesliding abutment 33 are washers 34 that'are adapted to enf gagethe-piston 22 and provide a iuidftight connection therebetween. n

The piston embodies an inner' or j main section 35 and disk-like end sections 36', the sections 35 and 36 being provided with cut out portionsy 37to accommodate coiled springs 38 thatnormally exert a lateral presthem into close engagement with the inner surfaces of the cylinder.

In the operation of the device, steam is admitted to the cylinder between the sliding abutment 33 and the blade of the piston, the valves being set in a position as shown by Figure l, whereupon the piston is rotated in the direction of the arrow as shown by Figure l, until the piston has made acomplete revolution which piston in making the revolution contacts with the sliding abutment to move the same upwardly within the opening 10, cutting off the supply of steam to the passageway 11 and insuring against a back pressure as the blade moves under the sliding abutment 33. r

With the valves set in this position, it will be obvious that the spent steam will exhaust through the valve 17.

It might be further stated that rings 39 span the space between the central section.

- and disk-lilre endV sections ot the piston to prevent the steam irom entering between the sections 35 and 36.

I claim In a rotary steam engine, a cylinder, a

piston mounted for rotation within the cylmetallic members having flanges, i secured within the expansible washers to insure a fluid-tight connection between the blade and cylinder, ar central flange member forming part of'each metallic member and adapted to rest on the piston to hold the metallic members in upright positions, and means cooperating with the blade for controlling the passage of fluid to and from the cylinder.

In testimony that I claim the foregoing as my own, I have hereto attiXed my signature.

WILLIAM Gr. PARMELE. 

